<script setup lang="ts">
import type { GoodsResult } from '@/types/goods'
import { getGoodsAPI } from '@/services/goods'
import { onLoad } from '@dcloudio/uni-app'
import { ref, computed } from 'vue'
import AddressPanel from './components/AddressPanel.vue'
import ServicePanel from './components/ServicePanel.vue'
import GoodsSkeleton from './components/GoodsSkeleton.vue'
import { postMemberCartAPI } from '@/services/cart'
import type {
  SkuPopupLocaldata,
  SkuPopupInstanceType,
  SkuPopupEvent,
} from '@/types/vk-data-goods-sku-popup'
// 获取安全区域距离
const { safeAreaInsets } = uni.getSystemInfoSync()

// 查询参数
const query = defineProps<{
  id: string
}>()

// 当前商品的详情
const goods = ref<GoodsResult>()

// 控制SKU弹出层的可见性
const skuKey = ref(false)
// 商品规格
const goodsInfo = ref<SkuPopupLocaldata>({} as SkuPopupLocaldata)

// SKU弹出层的打开模式枚举
enum SkuMode {
  Both = 1,
  Cart = 2,
  Buy = 3,
}

// 弹出层的打开模式
const skuMode = ref(SkuMode.Both)

// 打开SKU弹出层
const openSkuPopup = (mode: SkuMode) => {
  // 打开模式
  skuMode.value = mode
  // 商品规格
  goodsInfo.value = {
    _id: goods.value!.id,
    name: goods.value!.name,
    goods_thumb: goods.value!.mainPictures[0],
    spec_list: goods.value!.specs.map((v) => ({
      name: v.name,
      list: v.values,
    })),
    sku_list: goods.value!.skus.map((v) => ({
      _id: v.id,
      goods_id: goods.value!.id,
      goods_name: goods.value!.name,
      image: v.picture,
      price: +v.price * 100,
      sku_name_arr: v.specs.map((vv) => vv.valueName),
      stock: v.inventory,
    })),
  }
  // 弹框显示
  skuKey.value = true
}
// 获取商品详情
const getGoodsData = async () => {
  // 商品详情
  goods.value = await getGoodsAPI(query.id)
}

// SKUPopup组件实例的ref
const skuPopupRef = ref<SkuPopupInstanceType>()

// 计算选中的规格文本
const selectedAttrsText = computed<string>(() => {
  const defaultText = '请选择商品规格'
  // 初始化还没有实例，展示默认文本
  if (!skuPopupRef.value) return defaultText
  // 没有选择规格，展示默认文本
  if (!skuPopupRef.value.selectArr!.length) return defaultText
  // 判断数组是否含有空字符串
  const hasEmpty = skuPopupRef.value.selectArr?.includes('')
  // 如果有空字符串，展示默认文本
  if (hasEmpty) {
    return defaultText
  }
  // 否则展示满数组拼接后的字符串
  return skuPopupRef.value.selectArr!.join('-')
})

const isLoading = ref<boolean>(false)
onLoad(async () => {
  isLoading.value = true
  await getGoodsData()
  isLoading.value = false
})

const currentIndex = ref(0)

// 轮播图下标变化事件
const onSwiperChange: UniHelper.SwiperOnChange = (e: UniHelper.SwiperOnChangeEvent) => {
  // 赋值
  currentIndex.value = e.detail.current
}

// 图片预览
const onPreview = (url: string) => {
  uni.previewImage({
    urls: goods.value!.mainPictures,
    current: url,
  })
}

const popupRef = ref<UniHelper.UniPopupInstance>()

// 枚举(穷举) - 弹出层打开类型
enum SelectType {
  Address = 1,
  Service = 2,
}
const type = ref<SelectType>()
// 打开弹出层
const openPopup = (selectType: SelectType) => {
  type.value = selectType
  popupRef.value!.open!()
}
// 关闭弹出层
const closePopup = () => {
  popupRef.value!.close!()
}

// 加入购物车
const onAddCart = async (sku: SkuPopupEvent) => {
  // 调用加入购物车接口函数
  await postMemberCartAPI({
    skuId: sku._id,
    count: sku.buy_num,
  })
  // 提示
  uni.showToast({
    title: '加入成功',
    icon: 'success',
  })
  // 关闭SKU弹出层
  skuKey.value = false
}

// 立即购买
const onBuyNow = (sku: SkuPopupEvent) => {
  // 注意: 携带参数，skuId和buy_num
  uni.navigateTo({
    url: `/pagesOrder/create/create?skuId=${sku._id}&count=${sku.buy_num}`,
  })
}
</script>
<template>
  <GoodsSkeleton v-if="isLoading" />
  <template v-else>
    <scroll-view
      scroll-y
      class="viewport"
      v-if="goods"
    >
      <!-- 基本信息 -->
      <view class="goods">
        <!-- 商品主图 -->
        <view class="preview">
          <swiper
            circular
            @change="onSwiperChange"
          >
            <swiper-item
              v-for="(item, index) in goods.mainPictures"
              :key="index"
            >
              <image
                mode="aspectFill"
                :src="item"
                @tap="onPreview(item)"
              />
            </swiper-item>
          </swiper>
          <view class="indicator">
            <text class="current">{{ currentIndex + 1 }}</text>
            <text class="split">/</text>
            <text class="total">{{ goods.mainPictures.length }}</text>
          </view>
        </view>

        <!-- 商品简介 -->
        <view class="meta">
          <view class="price">
            <text class="symbol">¥</text>
            <text class="number">{{ goods.price }}</text>
          </view>
          <view class="name ellipsis">{{ goods.name }}</view>
          <view class="desc"> {{ goods.desc }} </view>
        </view>

        <!-- 操作面板 -->
        <view class="action">
          <view
            class="item arrow"
            @tap="openSkuPopup(SkuMode.Both)"
          >
            <text class="label">选择</text>
            <text class="text ellipsis"> {{ selectedAttrsText }} </text>
          </view>
          <view
            class="item arrow"
            @tap="openPopup(SelectType.Address)"
          >
            <text class="label">送至</text>
            <text class="text ellipsis"> 请选择收获地址 </text>
          </view>
          <view
            class="item arrow"
            @tap="openPopup(SelectType.Service)"
          >
            <text class="label">服务</text>
            <text class="text ellipsis"> 无忧退 快速退款 免费包邮 </text>
          </view>
        </view>
      </view>

      <!-- 商品详情 -->
      <view class="detail panel">
        <view class="title">
          <text>详情</text>
        </view>
        <view class="content">
          <view class="properties">
            <!-- 属性详情 -->
            <view
              class="item"
              v-for="item in goods.details.properties"
              :key="item.name"
            >
              <text class="label">{{ item.name }}</text>
              <text class="value">{{ item.value }}</text>
            </view>
          </view>
          <!-- 图片详情 -->
          <image
            v-for="(item, index) in goods.details.pictures"
            :key="index"
            mode="widthFix"
            :src="item"
          ></image>
        </view>
      </view>

      <!-- 同类推荐 -->
      <view class="similar panel">
        <view class="title">
          <text>同类推荐</text>
        </view>
        <view class="content">
          <navigator
            v-for="item in goods.similarProducts"
            :key="item.id"
            class="goods"
            hover-class="none"
            :url="`/pages/goods/goods?id=${item.id}`"
          >
            <image
              class="image"
              mode="aspectFill"
              :src="item.picture"
            ></image>
            <view class="name ellipsis">{{ item.name }}</view>
            <view class="price">
              <text class="symbol">¥</text>
              <text class="number">{{ item.price }}</text>
            </view>
          </navigator>
        </view>
      </view>
    </scroll-view>

    <!-- 用户操作 -->
    <view
      class="toolbar"
      :style="{ paddingBottom: safeAreaInsets?.bottom + 'px' }"
    >
      <view class="icons">
        <button class="icons-button"><text class="icon-heart"></text>收藏</button>
        <button
          class="icons-button"
          open-type="contact"
        >
          <text class="icon-handset"></text>客服
        </button>
        <navigator
          class="icons-button"
          url="/pages/cart/cart2"
        >
          <text class="icon-cart"></text>购物车
        </navigator>
      </view>
      <view class="buttons">
        <view
          class="addcart"
          @tap="openSkuPopup(SkuMode.Cart)"
        >
          加入购物车
        </view>
        <view
          class="buynow"
          @tap="openSkuPopup(SkuMode.Buy)"
        >
          立即购买
        </view>
      </view>
    </view>
    <!-- 准备弹出层组件 -->
    <uni-popup
      ref="popupRef"
      type="bottom"
    >
      <AddressPanel
        v-if="type === SelectType.Address"
        @close="closePopup"
      />
      <ServicePanel
        v-if="type === SelectType.Service"
        @close="closePopup"
      />
    </uni-popup>
  </template>
  <!-- SKU组件弹出层 -->
  <vk-data-goods-sku-popup
    ref="skuPopupRef"
    v-model="skuKey"
    :localdata="goodsInfo"
    :mode="skuMode"
    :actived-style="{
      color: '#27BA9B',
      backgroundColor: '#E9F8F5',
      borderColor: '#27BA9B',
    }"
    add-cart-background-color="#FFA868"
    buy-now-background-color="#29B99B"
    @add-cart="onAddCart"
    @buy-now="onBuyNow"
  />
</template>

<style lang="scss">
page {
  height: 100%;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.viewport {
  background-color: #f4f4f4;
}

.panel {
  margin-top: 20rpx;
  background-color: #fff;

  .title {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 90rpx;
    line-height: 1;
    padding: 30rpx 60rpx 30rpx 6rpx;
    position: relative;

    text {
      padding-left: 10rpx;
      font-size: 28rpx;
      color: #333;
      font-weight: 600;
      border-left: 4rpx solid #27ba9b;
    }

    navigator {
      font-size: 24rpx;
      color: #666;
    }
  }
}

.arrow {
  &::after {
    position: absolute;
    top: 50%;
    right: 30rpx;
    content: '\e6c2';
    color: #ccc;
    font-family: 'erabbit' !important;
    font-size: 32rpx;
    transform: translateY(-50%);
  }
}

/* 商品信息 */
.goods {
  background-color: #fff;

  .preview {
    height: 750rpx;
    position: relative;

    .indicator {
      height: 40rpx;
      padding: 0 24rpx;
      line-height: 40rpx;
      border-radius: 30rpx;
      color: #fff;
      font-family: Arial, Helvetica, sans-serif;
      background-color: rgba(0, 0, 0, 0.3);
      position: absolute;
      bottom: 30rpx;
      right: 30rpx;

      .current {
        font-size: 26rpx;
      }

      .split {
        font-size: 24rpx;
        margin: 0 1rpx 0 2rpx;
      }

      .total {
        font-size: 24rpx;
      }
    }
  }

  .meta {
    position: relative;
    border-bottom: 1rpx solid #eaeaea;

    .price {
      height: 130rpx;
      padding: 25rpx 30rpx 0;
      color: #fff;
      font-size: 34rpx;
      box-sizing: border-box;
      background-color: #35c8a9;
    }

    .number {
      font-size: 56rpx;
    }

    .brand {
      width: 160rpx;
      height: 80rpx;
      overflow: hidden;
      position: absolute;
      top: 26rpx;
      right: 30rpx;
    }

    .name {
      max-height: 88rpx;
      line-height: 1.4;
      margin: 20rpx;
      font-size: 32rpx;
      color: #333;
    }

    .desc {
      line-height: 1;
      padding: 0 20rpx 30rpx;
      font-size: 24rpx;
      color: #cf4444;
    }
  }

  .action {
    padding-left: 20rpx;

    .item {
      height: 90rpx;
      padding-right: 60rpx;
      border-bottom: 1rpx solid #eaeaea;
      font-size: 26rpx;
      color: #333;
      position: relative;
      display: flex;
      align-items: center;

      &:last-child {
        border-bottom: 0 none;
      }
    }

    .label {
      width: 60rpx;
      color: #898b94;
      margin: 0 16rpx 0 10rpx;
    }

    .text {
      flex: 1;
      -webkit-line-clamp: 1;
    }
  }
}

/* 商品详情 */
.detail {
  padding-left: 20rpx;

  .content {
    margin-left: -20rpx;
  }

  .properties {
    padding: 0 20rpx;
    margin-bottom: 30rpx;

    .item {
      display: flex;
      line-height: 2;
      padding: 10rpx;
      font-size: 26rpx;
      color: #333;
      border-bottom: 1rpx dashed #ccc;
    }

    .label {
      width: 200rpx;
    }

    .value {
      flex: 1;
    }
  }
}

/* 同类推荐 */
.similar {
  padding-left: 20rpx;

  .content {
    padding: 0 20rpx 20rpx;
    margin-left: -20rpx;
    background-color: #f4f4f4;
    overflow: hidden;

    navigator {
      width: 345rpx;
      padding: 24rpx 20rpx 20rpx;
      margin: 20rpx 20rpx 0 0;
      border-radius: 10rpx;
      background-color: #fff;
      float: left;
    }

    .image {
      height: 260rpx;
    }

    .name {
      height: 80rpx;
      margin: 10rpx 0;
      font-size: 26rpx;
      color: #262626;
    }

    .price {
      line-height: 1;
      font-size: 20rpx;
      color: #cf4444;
    }

    .number {
      font-size: 26rpx;
      margin-left: 2rpx;
    }
  }

  navigator {
    &:nth-child(even) {
      margin-right: 0;
    }
  }
}

/* 底部工具栏 */
.toolbar {
  background-color: #fff;
  height: 100rpx;
  padding: 0 20rpx;
  border-top: 1rpx solid #eaeaea;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-sizing: content-box;

  .buttons {
    display: flex;

    & > view {
      width: 220rpx;
      text-align: center;
      line-height: 72rpx;
      font-size: 26rpx;
      color: #fff;
      border-radius: 72rpx;
    }

    .addcart {
      background-color: #ffa868;
    }

    .buynow {
      background-color: #27ba9b;
      margin-left: 20rpx;
    }
  }

  .icons {
    padding-right: 10rpx;
    display: flex;
    align-items: center;
    flex: 1;

    .icons-button {
      flex: 1;
      text-align: center;
      line-height: 1.4;
      padding: 0;
      margin: 0;
      border-radius: 0;
      font-size: 20rpx;
      color: #333;
      background-color: #fff;
    }

    text {
      display: block;
      font-size: 34rpx;
    }
  }
}
</style>
